CN101865288B - A C-shaped coating sealing ring - Google Patents
A C-shaped coating sealing ring Download PDFInfo
- Publication number
- CN101865288B CN101865288B CN 201010170553 CN201010170553A CN101865288B CN 101865288 B CN101865288 B CN 101865288B CN 201010170553 CN201010170553 CN 201010170553 CN 201010170553 A CN201010170553 A CN 201010170553A CN 101865288 B CN101865288 B CN 101865288B
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing
- inconel
- sealing ring
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 57
- 239000011248 coating agent Substances 0.000 title 1
- 238000000576 coating method Methods 0.000 title 1
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 238000005253 cladding Methods 0.000 claims abstract description 8
- 229910001055 inconels 600 Inorganic materials 0.000 claims abstract description 5
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 239000004332 silver Substances 0.000 claims abstract description 4
- 229910000816 inconels 718 Inorganic materials 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 8
- 229910000679 solder Inorganic materials 0.000 claims 4
- 230000007547 defect Effects 0.000 abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 2
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 10
- 239000002826 coolant Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000007769 metal material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001026 inconel Inorganic materials 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Gasket Seals (AREA)
Abstract
一种包覆密封环，由三部分组成包括由铬镍铁合金600组成的第一环和高纯度银组成的第二环，以及被铬镍铁合金600外壳包裹在内的铬镍铁合金718绕成的螺旋形弹簧组成，在如此连接成一体的密封环外侧沿周向有开口。这种环截面成C形，带有径向的外密封面和内密封面。当压缩该密封圈时，螺旋形弹簧的每一圈对径向镍铬合金600环产生附加的反弹力，并使高纯度的银环发生塑性变形，填实了法兰密封表面的微小缺陷。这种弹性和塑性的配合，使该金属密封圈具有很好的密封性能和补偿因温度和压力波动引起法兰变形和密封圈松弛的能力。
A cladding seal ring consisting of three parts including a first ring of Inconel 600, a second ring of high purity silver, and a wound of Inconel 718 wrapped in an Inconel 600 shell Composed of helical springs, there is an opening in the circumferential direction on the outside of the thus connected sealing ring. This ring is C-shaped in cross-section with radial outer and inner sealing surfaces. When the sealing ring is compressed, each coil of the helical spring exerts an additional rebound force on the radial nickel-chromium alloy 600 ring, and plastically deforms the high-purity silver ring, filling the tiny defects on the sealing surface of the flange. This combination of elasticity and plasticity makes the metal sealing ring have good sealing performance and the ability to compensate for flange deformation and sealing ring relaxation caused by temperature and pressure fluctuations.
Description
技术领域technical field
本发明涉及一种压力容器中的密封件，尤其是高温、高压压力容器和稳压器中使用的包覆密封环。The invention relates to a sealing member in a pressure vessel, in particular to a cladding sealing ring used in a high-temperature, high-pressure pressure vessel and a pressure stabilizer.
背景技术Background technique
在高温、高压工况条件如核电站下的密封，必须考虑到如下技术指标：1、要保证运行期间在温度与压力交变的情况下泄漏率始终≤10-9Pa·m3/s，3、在事故中如急速冷却中，泄漏率≤10-6Pa·m3/s。压力容器和稳压器中是热电站设备中使用的重要部件，这些部件与外界相连时必须要有各种类型的静密封以防止热循环转换工质的泄漏。密封件具有各种不同的横截面结构以专门密封各种不同的部件，例如通常采用的：纯镍实心环垫片，缠绕垫片，齿形垫片、透平垫片等。但是这些垫片均难以避免在温度与压力交变的情况下垫片会产生应力松弛进而导致泄漏率达不到≤10-9Pa·m3/s的要求。For sealing under high temperature and high pressure conditions such as nuclear power plants, the following technical indicators must be considered: 1. To ensure that the leakage rate is always ≤10-9Pa m3/s under the condition of alternating temperature and pressure during operation; 3. In accidents such as rapid cooling, the leakage rate is ≤10-6Pa·m3/s. Pressure vessels and pressurizers are important components used in thermal power plant equipment. When these components are connected to the outside world, various types of static seals must be provided to prevent leakage of thermal cycle conversion working fluid. Seals have various cross-sectional structures to specifically seal various components, such as commonly used: pure nickel solid ring gaskets, wound gaskets, toothed gaskets, turbine gaskets, etc. However, it is difficult for these gaskets to avoid the stress relaxation of gaskets under the condition of alternating temperature and pressure, which leads to the leakage rate not meeting the requirement of ≤10-9Pa·m3/s.
因此需要提供一种效果更好的密封件来保证压力容器法兰之间结合处的密封性。Therefore, it is necessary to provide a sealing member with better effect to ensure the tightness of the junction between the flanges of the pressure vessel.
发明内容Contents of the invention
本发明的目的是提供一种核电站压力容器使用的实现塑性和弹性良好配合的C型密封环，其能够利用两种不同金属材料与弹簧三者之间的相互作用实现塑性和弹性的良好配合，从而使该包覆密封环具有良好的密封性能。The purpose of the present invention is to provide a C-shaped seal ring used in nuclear power plant pressure vessels to achieve good plasticity and elasticity, which can utilize the interaction between two different metal materials and springs to achieve good plasticity and elasticity. Therefore, the cladding sealing ring has good sealing performance.
本发明的另一个目的是提供一种C型密封环，其能补偿核电站压力容器因温度和压力波动引起的法兰变形和密封圈松弛。Another object of the present invention is to provide a C-shaped sealing ring, which can compensate for the deformation of the flange and the looseness of the sealing ring caused by the temperature and pressure fluctuations of the nuclear power plant pressure vessel.
这种C型包覆密封环，包括：第一环，所述第一环位于密封环的最外侧，其截面呈C形，并带有第一外密封面和第一内密封面；第二环，所述第二环外侧被所述第一环紧密包覆，其截面呈C形，且带有二外密封面和第二内密封面；还包括金属弹簧，所述金属弹簧环设于所述第二环的内侧并压紧所述第二环。This C-shaped cladding seal ring includes: a first ring, the first ring is located on the outermost side of the seal ring, its cross-section is C-shaped, and has a first outer sealing surface and a first inner sealing surface; the second ring , the outside of the second ring is tightly covered by the first ring, its cross-section is C-shaped, and has two outer sealing surfaces and a second inner sealing surface; it also includes a metal spring, and the metal spring ring is arranged on the the inner side of the second ring and compresses the second ring.
这种环截面呈C形，带有径向的外密封面和内密封面。当压该密封圈时，螺旋形弹簧的每一圈对径向内层金属外壳产生附加的反弹力，并使用外层金属材料发生塑性变形，填实了法兰密封表面的微小缺陷。这种弹性和塑性的配合，使该金属密封圈具有很好的密封性能和补偿因温度和压力波动引起法兰变形和密封圈松弛的能力。This ring has a C-shaped cross-section with radial outer and inner sealing surfaces. When the sealing ring is pressed, each coil of the helical spring generates an additional rebound force on the radial inner metal shell, and uses the outer metal material to undergo plastic deformation, filling the tiny defects on the sealing surface of the flange. This combination of elasticity and plasticity makes the metal sealing ring have good sealing performance and the ability to compensate for flange deformation and sealing ring relaxation caused by temperature and pressure fluctuations.
本发明中的密封环中的第一环和第二环是各自独立的两个部分，各自的材质不同。The first ring and the second ring in the sealing ring in the present invention are two independent parts with different materials.
所述第一环和第二环材质采用硬度不同的金属，从而使第一环的第一内密封面和第二环的第二外密封面相互施压有利于补偿并填实密封表面的微小缺陷。The first ring and the second ring are made of metals with different hardness, so that the first inner sealing surface of the first ring and the second outer sealing surface of the second ring exert pressure on each other, which is conducive to compensating and filling small defects on the sealing surface .
所述的第一环为纯度大小等于99％银，所述第二环为铬镍铁合金(inconel)600，所述金属弹簧采用的材质为铬镍铁合金(inconel)718。上述三种材料的弹性塑性的相互配合和相互的作用，使该金属密封环具有很好的密封性能和补偿因温度和压力波动引起法兰变形和密封环松弛的能力The first ring is silver with a purity equal to 99%, the second ring is inconel 600, and the metal spring is made of inconel 718. The elastic-plastic mutual cooperation and interaction of the above three materials make the metal sealing ring have good sealing performance and the ability to compensate for flange deformation and sealing ring relaxation caused by temperature and pressure fluctuations
另一方面，本发明提供的密封环由于金属弹簧为整体弹簧，中间只有一个焊点，和/或，第一环只有一个焊点，和/或，第二环只有一个焊点。由于上述三部件均为整体构造，中间只有一个焊点，较佳的利于径向密封和周向补偿。On the other hand, the sealing ring provided by the present invention has only one welding spot in the middle because the metal spring is an integral spring, and/or the first ring has only one welding spot, and/or the second ring has only one welding spot. Since the above-mentioned three components are integrally constructed, and there is only one welding spot in the middle, it is better for radial sealing and circumferential compensation.
另外，所述密封环密封不同的径向泄漏，使泄漏率≤10-9Pa·m3/s。In addition, the sealing ring seals different radial leakages, so that the leakage rate is ≤10-9Pa·m3/s.
所述第一环的周向开口位置与第二环的周向开口位置完全对应，整体呈C形。The position of the circumferential opening of the first ring completely corresponds to the position of the circumferential opening of the second ring, and the whole is C-shaped.
更佳的是：用单焊点的方法形成金属弹簧，和/或，用单焊点的方法形成所述第一环，和/或，用单焊点的方法形成所述第二环。More preferably, the metal spring is formed by a single welding point method, and/or the first ring is formed by a single welding point method, and/or the second ring is formed by a single welding point method.
附图说明Description of drawings
根据下文的描述和附图，可以很好地理解本发明，这些附图显示了本发明的非限制性的实施例。The invention can be better understood from the following description and the accompanying drawings, which show non-limiting embodiments of the invention.
更特别地，在附图中：More specifically, in the accompanying drawings:
下面结合实例进行进一步的说明：The following is a further explanation with examples:
图1是压力容器的轴向剖面图，含有本发明的实施例位于压力容器筒体法兰与顶盖法兰之间接合处的密封。Figure 1 is an axial cross-sectional view of a pressure vessel including a seal in accordance with an embodiment of the present invention at the junction between the pressure vessel barrel flange and the top cover flange.
图2是图1中所示的本发明实施例的环形密封环的截面图。FIG. 2 is a cross-sectional view of the annular seal ring of the embodiment of the present invention shown in FIG. 1 .
1第一环，2第二环，3金属弹簧，1 first ring, 2 second ring, 3 metal spring,
4法兰，5管嘴，6顶盖，7压力容器支承面，8环形段，9导向装置，10容器筒体4 flange, 5 nozzle, 6 top cover, 7 pressure vessel support surface, 8 ring section, 9 guide device, 10 vessel cylinder
具体实施方式Detailed ways
图1所示是高温、高压冷却剂的压力容器，筒体10由一个带螺栓螺纹孔的法兰4、一个焊有冷却剂进出口管嘴5的环形段8、一个过渡段和一个半圆形下封头焊接而成，其中顶盖6由钢板热压成半圆形，在上法兰4上周边钻有螺栓孔，其支承面上开有放置本发明的沟槽。高温、高压冷却剂在压力容器内流动时，其中有一部分沿压力容器的内壁直接流向压力容器出口接管，并伴随温度与压力的变化，由于压力容器顶盖和筒体法兰是两个独立制作的部件，在压力容器中必须装配在一起并且要保证高密封性，压力容器运行时内部压力要远远大于压力容器所在的环境压力，为防止冷却剂泄漏，在压力容器筒体与顶盖之间安装一密封环。Figure 1 shows a pressure vessel for high-temperature, high-pressure coolant. The cylinder 10 consists of a flange 4 with bolt threaded holes, an annular section 8 welded with coolant inlet and outlet nozzles 5, a transition section and a semicircle It is formed by welding the lower head of the shape, wherein the top cover 6 is hot-pressed into a semicircle by steel plate, and the upper periphery of the upper flange 4 is drilled with bolt holes, and the supporting surface has a groove for placing the present invention. When the high-temperature and high-pressure coolant flows in the pressure vessel, part of it flows directly to the outlet of the pressure vessel along the inner wall of the pressure vessel, and is accompanied by changes in temperature and pressure. Since the pressure vessel top cover and cylinder flange are two independently manufactured The components must be assembled together in the pressure vessel and must ensure high sealing performance. The internal pressure of the pressure vessel is much higher than the ambient pressure of the pressure vessel during operation. Install a sealing ring between them.
压力容器筒体与顶盖之间接合处要承受在工作过程中，热冷却剂产生的膨胀和收缩而引起的径向和轴向的应力变化，本发明是用一种简单而有效的设计来适应此位置较高的径向和轴向的应力变化，以取得最大的密封效果。The junction between the cylinder body and the top cover of the pressure vessel must bear the radial and axial stress changes caused by the expansion and contraction of the hot coolant during the working process. The present invention uses a simple and effective design to Adapt to the higher radial and axial stress changes at this position to achieve the greatest sealing effect.
通过图2中所示截面图，本发明得以更明确的描述。该环由三部分组成，包括轴向相对由不同材料组成的第一环1和第二环2，并且同时在内侧设置金属弹簧3，连接成一体的密封环中有一沿环外侧的周向开口；所述的第一环截面呈C形，带有径向的密封面；所述的第二环截面呈C形，带有径向的密封面；所述的螺旋形弹簧被两层金属包覆在内。第一层与第二层环阻止了密封环的周向伸展，从而防止产生不良的圆周应力。The present invention is more clearly described by means of the sectional view shown in FIG. 2 . The ring is composed of three parts, including the
可见，本发明较特别的是在传统C形密封环中分别设置不同材质的内外层且在内侧设置了弹簧3。It can be seen that the present invention is quite special in that the inner and outer layers of different materials are respectively arranged in the traditional C-shaped sealing ring and the spring 3 is arranged on the inner side.
较佳的是，选择两环为不同材质的金属，如第一环为纯度大于等于99％的银，第二环为铬镍铁合金(inconel)600，而金属弹簧采用的材质为铬镍铁合金(inconel)718。Preferably, the two rings are selected to be metals of different materials, such as the first ring is silver with a purity greater than or equal to 99%, the second ring is inconel 600, and the metal spring is made of inconel ( inconel) 718.
在较佳实施例中，第一环和第二环轴向隔开，是各自独立的两个部分，两个环所用金属材质不同。第一层金属环比第二层金属环硬度要小，主要用来起到良好的弥合作用，并用来填实法兰密封表面的微小缺陷。In a preferred embodiment, the first ring and the second ring are axially separated and are two independent parts, and the metal materials used for the two rings are different. The hardness of the first layer metal ring is smaller than that of the second layer metal ring, which is mainly used to play a good bridging effect and to fill small defects on the sealing surface of the flange.
由金属材料组成的第一环和第二环均只有一个焊点。其被金属环包裹在内的螺旋形弹簧是一个整体弹簧，中间只有一个焊点，较佳的利于径向密封和周向补偿。Both the first ring and the second ring made of metal materials have only one welding spot. The helical spring wrapped by the metal ring is an integral spring with only one welding spot in the middle, which is better for radial sealing and circumferential compensation.
工作中弹簧和第一层金属环用来密封高温高压的冷却剂在其间产生的各种不同的径向的泄漏，使泄漏率在正常情况下始终≤10-9Pa·m3/s。，这种弹性和塑性的配合，使该金属密封圈具有很好的密封性能和补偿因温度和压力波动引起法兰变形和密封圈松弛的能力。During work, the spring and the first metal ring are used to seal the various radial leakages generated by the high-temperature and high-pressure coolant, so that the leakage rate is always ≤10-9Pa·m3/s under normal conditions. , This combination of elasticity and plasticity makes the metal sealing ring have good sealing performance and the ability to compensate for flange deformation and sealing ring relaxation caused by temperature and pressure fluctuations.
应当理解，附图只显示了经由本发明的实用示范提供的一个例子，可以改变其形式和配置，但不会脱离本发明基于的构思的范围。在附带的权利要求书中提供的任何参考标记纯粹是为了便于参照说明书和附图进行阅读，它们不限制由权利要求表示的保护范围。It should be understood that the accompanying drawings only show an example provided by way of a practical demonstration of the invention, which may vary in form and configuration without departing from the scope of the idea on which the invention is based. Any reference signs provided in the appended claims are purely to facilitate reading with reference to the description and drawings and they do not limit the scope of protection represented by the claims.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170553 CN101865288B (en) | 2010-05-13 | 2010-05-13 | A C-shaped coating sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170553 CN101865288B (en) | 2010-05-13 | 2010-05-13 | A C-shaped coating sealing ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101865288A CN101865288A (en) | 2010-10-20 |
| CN101865288B true CN101865288B (en) | 2013-01-30 |
Family
ID=42957125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010170553 Active CN101865288B (en) | 2010-05-13 | 2010-05-13 | A C-shaped coating sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101865288B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080725A (en) * | 2011-02-01 | 2011-06-01 | 宁波天生密封件有限公司 | Intelligent wrapped C-shaped sealing ring |
| CN102168757A (en) * | 2011-02-01 | 2011-08-31 | 宁波天生密封件有限公司 | C-shaped cladding sealing ring of built-in spring and manufacturing method thereof |
| CN102359609A (en) * | 2011-10-22 | 2012-02-22 | 无锡智能自控工程有限公司 | Metal valve seat sealing structure for cryogenic butterfly valve under ultralow temperature working condition |
| CN102619980B (en) * | 2012-03-09 | 2015-07-08 | 浙江华夏阀门有限公司 | Rectangular ring and O-shaped ring self-tight sealing structure |
| CN103377725B (en) * | 2012-04-27 | 2016-05-18 | 上海核工程研究设计院 | A kind of reactor core internals |
| CN103594125A (en) * | 2013-11-27 | 2014-02-19 | 中科华核电技术研究院有限公司 | Sealing ring used for reactor pressure vessel |
| CN103646674A (en) * | 2013-11-27 | 2014-03-19 | 中科华核电技术研究院有限公司 | C-shaped sealing ring |
| CN103745756A (en) * | 2013-12-23 | 2014-04-23 | 宁波天生密封件有限公司 | Production process of O-shaped seal ring of nuclear reactor pressure vessel and products thereof |
| CN104616706B (en) * | 2015-02-05 | 2017-12-15 | 喻杰 | A kind of pressure-resistant shell component of integration |
| CN105987940A (en) * | 2015-02-13 | 2016-10-05 | 亚申科技研发中心（上海）有限公司 | High-pressure electrochemical reaction tank and under pressure system |
| DE102016213899A1 (en) * | 2016-07-28 | 2018-02-01 | Mahle International Gmbh | sealing element |
| CN106247050B (en) * | 2016-09-05 | 2018-11-09 | 宁波天生密封件有限公司 | A kind of normal residual heat removal exchanger sealing ring |
| CN107191155B (en) * | 2017-04-14 | 2023-07-25 | 博德世达（天津）能源科技有限公司 | High-temperature underground safety valve |
| CN107945890B (en) * | 2017-12-15 | 2020-09-25 | 中广核工程有限公司 | Nuclear power station reactor control rod driving mechanism |
| CN111649133A (en) * | 2020-06-03 | 2020-09-11 | 滨州双峰石墨密封材料有限公司 | Winding gasket |
| CN112253750A (en) * | 2020-10-21 | 2021-01-22 | 中国航发沈阳发动机研究所 | Flexible graphite braided sealing strip and mounting method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0932928A (en) | 1995-07-17 | 1997-02-07 | Nippon Valqua Ind Ltd | Metal gasket and manufacture thereof |
| JP2001182833A (en) * | 1999-12-24 | 2001-07-06 | Nippon Valqua Ind Ltd | Metal gasket and its manufacturing method |
| JP2003343726A (en) * | 2002-05-24 | 2003-12-03 | Sanko Kogyo Kk | Gasket |
| CN201133465Y (en) * | 2008-01-07 | 2008-10-15 | 贵州航天精工制造有限公司 | C -type sealed ring |
| DE102008035186A1 (en) * | 2008-07-28 | 2010-02-04 | Elringklinger Ag | Form sealing ring e.g. C-shaped sealing ring, manufacturing method for sealing arrangement of exhaust gas guiding pipelines in internal combustion engine, involves bending strip or rod-like profile body to develop ring form or spiral form |
| CN201843994U (en) * | 2010-05-13 | 2011-05-25 | 励行根 | Coating seal ring |
-
2010
- 2010-05-13 CN CN 201010170553 patent/CN101865288B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0932928A (en) | 1995-07-17 | 1997-02-07 | Nippon Valqua Ind Ltd | Metal gasket and manufacture thereof |
| JP2001182833A (en) * | 1999-12-24 | 2001-07-06 | Nippon Valqua Ind Ltd | Metal gasket and its manufacturing method |
| JP2003343726A (en) * | 2002-05-24 | 2003-12-03 | Sanko Kogyo Kk | Gasket |
| CN201133465Y (en) * | 2008-01-07 | 2008-10-15 | 贵州航天精工制造有限公司 | C -type sealed ring |
| DE102008035186A1 (en) * | 2008-07-28 | 2010-02-04 | Elringklinger Ag | Form sealing ring e.g. C-shaped sealing ring, manufacturing method for sealing arrangement of exhaust gas guiding pipelines in internal combustion engine, involves bending strip or rod-like profile body to develop ring form or spiral form |
| CN201843994U (en) * | 2010-05-13 | 2011-05-25 | 励行根 | Coating seal ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101865288A (en) | 2010-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101865288B (en) | A C-shaped coating sealing ring | |
| CN102168757A (en) | C-shaped cladding sealing ring of built-in spring and manufacturing method thereof | |
| CN202176712U (en) | C-shaped cladding sealing ring with built-in spring | |
| CN105910474B (en) | More tubular sheet heat exchangers | |
| JP6817200B2 (en) | Heterogeneous fittings during high temperature, high pressure transients and under periodic loads | |
| CN104616706A (en) | Integrated pressure-resistant shell assembly | |
| CN201843994U (en) | Coating seal ring | |
| CN107887039A (en) | Nuclear power plant's access lock displacement compensation device | |
| CN205298942U (en) | Combined casing cap | |
| CN104358874B (en) | A kind of high compression resilience seal assembly high | |
| CN102678925A (en) | Multi-stage constant stress sealing gasket | |
| CN207268306U (en) | Spring Compensation Structure for Flange Sealing of Pressure Vessels | |
| CN107023723A (en) | Flange and manufacturing method thereof | |
| CN106641429A (en) | Corrugated pipe stop valve for chlorine gas | |
| CN105042234A (en) | MMC type gasket and design method for flange connection | |
| CN206419593U (en) | Winding-type metallic gasket | |
| CN203517310U (en) | Sealing structure for high-pressure composite cylinder | |
| CN205349430U (en) | Novel elastic sealing structure of steam turbine intubate | |
| CN102094970A (en) | Sealing gasket capable of controlling range of stress relaxation | |
| JP2017110779A (en) | gasket | |
| CN103594125A (en) | Sealing ring used for reactor pressure vessel | |
| CN107448607A (en) | A kind of sealing structure of downhole tool experimental rig | |
| CN203585684U (en) | High-pressure rotating compensator | |
| CN205718591U (en) | Many tubular sheet heat exchangers | |
| CN104913089B (en) | A kind of safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: SONG WEI Effective date: 20130417 Owner name: TIANSHENG AIRTAIGHT PACKING NINGBO Free format text: FORMER OWNER: LI XINGGEN Effective date: 20130417 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130417 Address after: Zhejiang Province, Cixi City, Baisha 315302 Peng min Lu No. 118 Patentee after: Ningbo Tiansheng Sealing Packing Co., Ltd. Address before: 315302 Zhejiang Province, Cixi city Hushanjiedao Qun Feng Cun Li Jia Nong Patentee before: Li Xinggen Patentee before: Song Wei |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20101020 Assignee: Tianding LIAN sealing technology (Beijing) Co. Ltd. Assignor: Ningbo Tiansheng Sealing Packing Co., Ltd. Contract record no.: 2016110000014 Denomination of invention: Cladding sealing ring and manufacturing method thereof Granted publication date: 20130130 License type: Common License Record date: 20160919 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model |